Method for cleaning metallic workpieces

Details Method for cleaning metallic workpieces Method for cleaning metallic workpieces

1991-12-23

1993-12-07

Morris, Theodore

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 10, 134 21, 134 251, 134 254, 134 26, 134 29, 134 40, 134 73, 134105, 134200, B08B 300, B08B 304, B08B 500, C23G 114

Patent

active

052680355

ABSTRACT:
A method and an apparatus for treating workpieces with a fluid, in particular for cleaning metallic workpieces prior to a subsequent heat treatment are disclosed. According to claimed method the workpieces are positioned in a washing vessel and are entirely overflowed with a pressureless swell of a treating fluid. After a certain period of time, a discharge opening in the vessel is closed so that an immersion bath is filled in. When the workpieces are entirely immersed in the treating fluid, the fluid is agitated by means of air bubbles. During subsequent bath discharge the workpieces are continuously overflowed by the treating fluid in order to avoid chemical reactions with the ambient atmosphere. Finally, the workpieces are dried by means of a vacuum dryer.

REFERENCES:
patent: 2567820 (1951-09-01), Messerschmidt
patent: 3460990 (1969-08-01), Barday
patent: 5106425 (1992-04-01), Sluga et al.
patent: 5137581 (1992-08-01), Takahashi

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